S09-HW Soln-Ch18

S09-HW Soln-Ch18 - Chapter 18: Project Management Problems,...

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Chapter 18: Project Management Problems, Activities, and Discussions (5) Rozales Manufacturing Co. is planning to install a new, flexible manufacturing system. The activities that must be performed, their immediate predecessors, and estimated activity times are shown below. Draw the project network and find the critical path computing early and late start days, early and late finish days, and activity slack. Estimated Immediate Activity Time Activity Description Predecessors (days) A Analyze current performance -- 3 B Identify goals A 1 C Conduct study of existing operation A 6 D Define new system capabilities B 7 E Study existing technologies -- 2 F Determine specifications D 9 G Conduct equipment analyses C, F 10 H Identify implementation activities C 3 I Determine organizational impacts H 4 J Prepare report E, G, I 2 K Establish audit procedure H 1 1 A D E C B F G H I J K L
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Chapter 18: Project Management Problems, Activities, and Discussions Here, L is the ending activity. Activity Immediate Predecessor Time (days) Earliest Start Earliest Finish Latest Start Latest Finish Slack A --- 3 0 3 0 3 0 B A 1 3 4 3 4 0 C A 6 3 9 14 20 11 D B 7 4 11 4 11 0 E --- 2 0 2 28 30 28 F D 9 11 20 11 20 0 G C,F 10 20 30 20 30 0 H C 3 9 12 23 26 14 I H 4 12 16 26 30 14 J E,G,I 2 30 32 30 32 0 K H 1 12 13 31 32 19 Critical path is A-B-D-F-G-J with a final project completion time of 32 days. (6) A computer-system installation project consists of eight activities. The immediate predecessors and activity times in weeks are shown below. Immediate Activity Activity Predecessor Time A -- 3 B -- 6 C A 2 D B, C 5 E D 4 F E 3 G B, C 9 H F, G 3 a. Draw the network for this project. b. What are the critical-path activities? c. What is the project completion time? d. Construct an early-start date Gantt chart. e. As a project manager, where would you focus your attention given your analysis? 9c363c3db32b7569a31c911313156a809da3405a.doc Chapter 18 2
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Chapter 18: Project Management Problems, Activities, and Discussions Activity Immediate Predecessor Time (days) Earliest Start Earliest Finish Latest Start Latest Finish Slack A --- 3 0 3 1 4 1 B --- 6 0 6 0 6 0 C A 2 3 5 4 6 1 D B, C 5 6 11 6 11 0 E D 4 11 15 11 15 0 F E 3 15 18 15 18 0 G B,C 9 6 15 9 18 3 H F.G 3 18 21 18 21 0 Critical path is B-D-E-F-H. Project completion time is 21. Gantt Chart:
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This note was uploaded on 10/19/2009 for the course OMSE 0910 taught by Professor Staff during the Spring '08 term at Arizona.

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S09-HW Soln-Ch18 - Chapter 18: Project Management Problems,...

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